Get all the latest Nationals news from MLB.com's Bill Ladson.

Guzman has setback; Young still in Viera

Nationals shortstop Cristian Guzman had a setback on Friday. His left hamstring was stiff, and the Nationals will make a decision on Saturday to determine if he will go on the disabled list. Guzman suffered a left hamstring strain in the bottom of the ninth inning against the Phillies on Monday.

Facing Phillies closer Brad Lidge to lead off the inning, Guzman singled down the right-field line. As he started running the bases, Guzman felt pain in his leg, but he kept running hard. As he reached first base, it looked like Guzman would try for second, but he stopped after the pain in his leg worsened.

If Guzman is placed on the DL, the team most likely will bring up infielder Alex Cintron, who is 9-for-18 [.474] for Triple-A Syracuse.

First baseman Dmitri Young is still at extended Spring Training in Viera, Fla. He still has some pain in his back and right hip. There is no timetable as to when he will start his rehab assignment.

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